Figure 1.
Graphical model. Random variables are in circles, while deterministic parameters are in boxes. Observed variables are shaded. Plates indicate replication.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.